Top 20 Repeated Class 9 Science Questions with Answers | MCQs for 2025 Exams
Are you preparing for your Class 9 Science exams and looking for the most important and repeated questions? You’ve landed at the right place! At , we bring you the Top 20 Repeated Class 9 Science MCQs that frequently appear in school exams, Olympiads, and competitive assessments. These Class 9 Science MCQs with answers are curated from previous years’ papers and NCERT-based questions to help you revise smarter and score higher. Whether you're focusing on Physics, Chemistry, or Biology, these questions cover all key chapters like Matter, Motion, Tissues, Atoms, and Natural Resources. This post is ideal for CBSE, ICSE, and state board students aiming to strengthen their conceptual clarity and exam readiness. Practice these repeated Class 9 Science questions to boost your confidence and accuracy. Bookmark this page and share it with your classmates. Let’s crack Science together!
📚 Repeated Class 9 Science MCQs with Answers
1. Which of the following is a pure substance?
A) Milk B) Air C) Oxygen D) Soil
2. The SI unit of force is:
A) Joule B) Newton C) Pascal D) Watt
3. Which part of the plant conducts photosynthesis?
A) Root B) Stem C) Leaf D) Flower
4. Which of the following is not a characteristic of particles of matter?
A) They have spaces between them B) They are stationary C) They attract each other D) They are continuously moving
5. The formula of water is:
A) H₂O B) CO₂ C) O₂ D) HCl
6. Which gas is used by green plants to make food?
A) Oxygen B) Nitrogen C) Carbon dioxide D) Hydrogen
7. The basic unit of life is:
A) Atom B) Molecule C) Cell D) Tissue
8. Which of the following is a non-metal?
A) Iron B) Copper C) Sulphur D) Zinc
9. The process of conversion of water into vapour is called:
A) Condensation B) Sublimation C) Evaporation D) Freezing
10. Which organelle is known as the powerhouse of the cell?
A) Nucleus B) Mitochondria C) Ribosome D) Golgi body
11. Which law explains the relationship between force and acceleration?
A) Newton’s First Law B) Newton’s Second Law C) Newton’s Third Law D) Law of Inertia
12. Which of the following is a chemical change?
A) Melting of ice B) Boiling of water C) Burning of paper D) Dissolving salt in water
13. The smallest particle of an element is:
A) Molecule B) Atom C) Ion D) Compound
14. Which of the following is a connective tissue?
A) Blood B) Muscle C) Nerve D) Skin
15. The speed of an object is measured in:
A) m/s B) m² C) m³ D) kg
16. Which of the following is a heterogeneous mixture?
A) Salt solution B) Sugar solution C) Air D) Sand and iron filings
17. The process of separation of solid from liquid is called:
A) Filtration B) Evaporation C) Condensation D) Sublimation
18. Which of the following is not a plant tissue?
A) Parenchyma B) Collenchyma C) Xylem D) Neuron
19. Which of the following is used to measure temperature?
A) Barometer B) Thermometer C) Hygrometer D) Anemometer
20. The atomic number of carbon is:
A) 4 B) 6 C) 8 D) 12
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